Thomas j



(No Model.)

T. J. TERRY.

THILL COUPLING.

No. 283,983. Patented Aug. 28, 1883.

N. PUERS. Phuwumc n hun Washington, Q C.

UNiTEn STATES PATENT OFFICE.

THOMAS J. TERRY, OF ASHLAND, MISSOURI.

THlLL COUPLING.

SPECIFICATION forming part of Letters Patent No. 283,933, dated August 28, 1883.

Application filed March 21, 1883.

To all whom, it may concern:

Be it known that I, THOMAS J. TERRY, of Ashland, Boone county, Missouri, have invented a certainnew and useful Improvement in Thill-Gouplings, of which the following is a full, clear, and exact description, reference be ing had to the accompanying drawings, forming part of this specification.

This coupling is applicable to other analogous purposes, such as the coupling of the sickle-bar of a harvester or reaper to the pit man. The coupling belongs to that class where the coupling-pin is fast upon one of the members, and is secured in the other by entering in one position and then turning one part on the other. The scope of my invention is,set forth in the specification and claim.

In the drawings, Figure l is a perspective View of the parts detached. Fig. 2 is a side elevation. Fig. 3 is a section at 3 3, Fig. 2; and Fig. 4 is a section at 3 3, except that the parts are not in working position.

ment of the member G toward the lug or car i D when the coupling is in working position, the lug G, constituting the end of the member G, bearing against the shoulder F at one side and against the side of the ear 0 at the other side when in working position. The pin E has a head, E, that occupies a counterbore, D in the outer side of the ear D when the parts are in working position, as shown in Figs. 2 and 3, and prevents that end of the pin from moving upward in the slot D.

(No model.)

G is a concave shoulder. upon the part G, fitting the curved parts of the ears 0 and D. The distance from the head E of the pin to the lug G equals, at least, the thickness of the lug or ear D, and the distance from the small end of the pin E to the farther side of the lug G cannot exceed the distance asunder of the ears 0 and D. Thus when the parts are in the position shown in Fig. 1 the member G may be moved downward, the part of the pin between the head and the lug G descending the slot D until the pin comes in line with the pin-hole O in the ear (1. The parts then occupy the position shown in'Fig. 4i. To put them in the working condition the end of the pin must be pushed into the hole 0 and the. head E into the counterbore D", and then the part G turned so as to bring the lug G between the ear 0 and the shoulder F. When in this position, the part G is restrained from side movement and has free oscillation on the pin E.

I have shown and described the shoulder F as made upon the ear D. It is obvious that it may be made upon the side of the lug G, or part on the ear and part on the lug, the essential point being that the parts shall be restrained from transverse derangement by the side bearing of lug G between the ears 0 and D.

Having described my invention, whatI claim A coupling-joint having the combination of ears 0 and D, one of them provided with slot D and counterbore D a pivot-pin provided with a head entering the counterbore, and 'a point entering a hole in the other car, said pin 80 being fixed in the member G of the coupling, and the shoulder F, for the purpose set forth.

' THOMAS J. TERRY.

Witnesses:

SAML. KKIGHT, Gno. H. KNIGHT. 

